Podcast
Questions and Answers
What is the primary responsibility of the network layer?
What is the primary responsibility of the network layer?
- Adding physical addresses to the packet header
- Overseeing delivery of packets between two systems on the same network
- Handling error correction for packet transmission
- Ensuring source-to-destination delivery of packets across multiple networks (correct)
What information does the network layer add to the packet header?
What information does the network layer add to the packet header?
- Error correction codes
- Physical addresses of the sender and receiver
- Logical addresses of the sender and receiver (correct)
- Network interface information
In an internetwork, how are packets routed to their final destination?
In an internetwork, how are packets routed to their final destination?
- Packets are broadcasted to all connected networks
- The network layer of the destination host retrieves the packets
- Routers or switches route packets to their final destination (correct)
- Packets follow a random path to reach the destination
What distinguishes the network layer from the data link layer in terms of packet delivery?
What distinguishes the network layer from the data link layer in terms of packet delivery?
Why is an addressing system necessary for packet travel through the Internet?
Why is an addressing system necessary for packet travel through the Internet?
Flashcards
Network Layer's Responsibility?
Network Layer's Responsibility?
Ensuring source-to-destination delivery of packets across multiple networks.
Info added by Network Layer?
Info added by Network Layer?
The network layer adds logical addresses of the sender and receiver to the packet header.
How packets reach destination?
How packets reach destination?
In an internetwork, packets are routed to their final destination by routers or switches.
Network vs. Data Link Layer?
Network vs. Data Link Layer?
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Why Addressing System needed?
Why Addressing System needed?
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Study Notes
Network Layer Responsibilities
- Primary responsibility is to route data between devices on different networks
Packet Header Information
- Network layer adds source and destination IP addresses to the packet header
- Also adds information for routing and congestion control
Packet Routing
- Packets are routed to their final destination through a process called routing
- Routers examine the destination IP address and forward packets accordingly
- Routing involves multiple hops, with each router forwarding the packet to the next hop
Network Layer vs Data Link Layer
- Network layer focuses on routing packets between networks
- Data link layer focuses on error-free transfer of data frames between devices on the same network
Addressing System Necessity
- An addressing system is necessary for packet travel through the Internet
- IP addresses allow devices to be uniquely identified and located on the network
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